The invention belongs to the technical field of
medicine and relates to a 1,4-dihydrobithiophene [3', 2': 5, 6] bithiapyran [4, 3-c] pyrazol-3-
carboxylic acid derivative and application thereof used as an
estrogen receptor, in particular to a 1,4-dihydrobithiophene [3', 2': 5, 6] bithiapyran [4, 3-c] pyrazol-3-
carboxylic acid derivative and a pharmaceutically acceptable salt, or a stereoisomer thereof and a
prodrug as well as a pharmaceutically acceptable vector in compatibility or a
diluent used as an
estrogen receptor. The structural general formula of the derivative is disclosed in the specification, and in the
structural formula, n R1 can be independently selected from a substituted or unsubstituted amido group, and R2 can be independently selected from H or an acetyl group. The derivative can be used for treating and preventing various diseases related to
estrogen functions, such as diseases related to estrogen deficiency, estrogen sensitive
cancer and
hyperplasia,
endometriosis,
uterus myoma and
osteoarthritis. Compounds or compositions of the derivative can also be independently used or combined with
progestogen or a hormoneantagonist as a contraceptive.